Cover Lock Screen has been in beta for several months, fine-tuning its contextually aware lock screen that chooses apps based on location or time of day. What purpose does that serve Twitter, the social media giant that just acquired the team behind Cover for an undisclosed sum?

The three co-founders of Cover have announced that they have joined Twitter in order to continue the ideas of its app. This means that either Twitter has some drastically new ideas for its Android app or the company might even introduce a Facebook Home-like experience that takes Twitter outside of its main application. Might Cover become the basis for a Twitter-infused lock screen that promotes tweets -- or let's face it, advertisements -- based on context? That seems a possibility based on the Cover team's farewell message.

"Twitter, like Cover, believes in the incredible potential of Android. They share our vision that smartphones can be a lot smarter -- more useful and more contextual -- and together we're going to make that happen. We'll be building upon a lot of what makes Cover great, and we're thrilled to create something even better at Twitter."

Cover will remain available in Google Play but there's no promise to continue development of the app based on the team's farewell message. You can try out Cover, last updated April 3, in Google Play.